Class: Configature::Namespace

Inherits:
Object
  • Object
show all
Defined in:
lib/configature/namespace.rb

Constant Summary collapse

BOOLEAN_EQUIVALENT =

Constants ============================================================

begin
  h = {
    true => %w[ on yes 1 ],
    false => %w[ off no 0 ]
  }.flat_map do |k, a|
    a.map do |v|
      [ v, k ]
    end
  end.to_h

  -> (v) do
    b = h[v]

    b.nil? ? !!v : b
  end
end
RECAST_AS = 
{
  [ :array, Array ] => -> (v) { v.is_a?(Array) ? v : [ v ] },
  [ :string, String ] => :to_s.to_proc,
  [ :integer, Integer ] => :to_i.to_proc,
  [ :float, Float ] => :to_f.to_proc,
  [ :boolean ] => -> (v) { BOOLEAN_EQUIVALENT[v] },
  [ :date, Date ] => -> (v) { Date.parse(v) },
  [ :datetime, DateTime ] => -> (v) { DateTime.parse(v) },
  [ :time, Time ] => -> (v) { v.match?(/\A\d+\z/) ? Time.at(v.to_i) : Time.parse(v) }
}.flat_map do |a, v|
  a.map do |k|
    [ k, v ]
  end
end.to_h.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name = nil, env_name_prefix: '', env_suffix: '', extends: nil) {|_self| ... } ⇒ Namespace

Instance Methods =====================================================

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/configature/namespace.rb', line 51

def initialize(name = nil, env_name_prefix: '', env_suffix: '', extends: nil)
  @name = name&.to_sym
  @extends = extends
  @env = extends&.instance_variable_get(:@env)
  @env_default = extends&.instance_variable_get(:@env_default)
  @namespaces = extends ? extends.namespaces.dup : { }
  @parameters = extends ? extends.parameters.dup : { }
  @env_suffix = env_suffix
  @env_name_prefix = name ? Configature::Support.extend_env_prefix(env_name_prefix, name) : ''

  yield(self) if (block_given?)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, **options) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 114

def method_missing(name, **options)
  parameter(name, **options)
end

Instance Attribute Details

#env_name_prefix ⇒ Object (readonly)

Returns the value of attribute env_name_prefix.



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# File 'lib/configature/namespace.rb', line 43

def env_name_prefix
  @env_name_prefix
end

#name ⇒ Object (readonly)

Properties ===========================================================



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# File 'lib/configature/namespace.rb', line 42

def name
  @name
end

#namespaces ⇒ Object (readonly)

Returns the value of attribute namespaces.



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# File 'lib/configature/namespace.rb', line 44

def namespaces
  @namespaces
end

#parameters ⇒ Object (readonly)

Returns the value of attribute parameters.



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# File 'lib/configature/namespace.rb', line 45

def parameters
  @parameters
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 110

def [](name)
  @parameters[name] or @namespaces[name]
end

#__instantiate(source: nil, env: ENV) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 118

def __instantiate(source: nil, env: ENV)
  if (@env and source)
    env_key = @env.map { |e| env[e] }.first || @env_default

    if (@env_suffix)
      env_key += @env_suffix
    end

    source = source[env_key] || source[env_key.to_sym]
  end

  self.__instantiate_branch(source: source, env: env)
end

#__instantiate_branch(source: nil, env: nil) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 132

def __instantiate_branch(source: nil, env: nil)
  Configature::Data.new(
    @parameters.values.map do |param|
      name = param[:name]
      name_s = name.to_s
      name_sym = name_s.to_sym

      value = (param[:env] && env && env[param[:env]]) ||
        source && (source[name_s] || source[name_sym])

      case (remap = param[:remap])
      when Hash, Proc
        value = remap[value] || value
      end

      if (!value.nil? and as = param[:as])
        value = as[value]
      end

      [ param[:name], value.nil? ? param[:default].call : value ]
    end.to_h.merge(
      @namespaces.map do |name, namespace|
        [
          name,
          namespace.__instantiate_branch(
            source: source && (source[name] || source[name.to_s]),
            env: env
          )
        ]
      end.to_h
    )
  )
end

#env(*names, default: 'development') ⇒ Object 



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# File 'lib/configature/namespace.rb', line 79

def env(*names, default: 'development')
  @env = names.map(&:to_s).freeze
  @env_default = default
end

#namespace(name, env_suffix: '', extends: nil, &block) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 64

def namespace(name, env_suffix: '', extends: nil, &block)
  name = name.to_sym

  @namespaces[name] = self.class.new(name, env_suffix: env_suffix, extends: extends && self.namespaces[extends], env_name_prefix: @env_name_prefix).tap do |n|
    case (block&.arity)
    when nil
      nil
    when 1
      block[n]
    else
      n.instance_eval(&block)
    end
  end
end

#parameter(parameter_name, default: nil, as: nil, name: nil, env: nil, remap: nil) ⇒ Object 



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# File 'lib/configature/namespace.rb', line 84

def parameter(parameter_name, default: nil, as: nil, name: nil, env: nil, remap: nil)
  name ||= parameter_name
  as ||= default.is_a?(Array) ? :array : :string

  case (as)
  when Class, Symbol
    as = RECAST_AS[as]
  end

  @parameters[name] = {
    name: name,
    default: default.is_a?(Proc) ? default : -> { default },
    as: as,
    remap: remap,
    env:
      case (env)
      when false
        false
      when nil
        Configature::Support.extend_env_prefix(@env_name_prefix, name)
      else
        env
      end
  }
end